Emergency-governor.



J. WILKINSON. EMERGENCY GOVERNOR. APPLIGATION FILED FEB. 6, 1912. 1,076,472. Panented Oct. 21, 1913.

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. d'AMES WILKINSON.

' MED nrps r nirnnr OF BOSTON, MASSACHUSETTS ASSIGNOE 31% GENfiFdrdh ELIN'FTEEC COMPANY, A COBPOBATIQX OF NEW YQBK.

EMERGENCY-GOVERNOR.

Specification of Letters Patent.

Patented ea. 21, read.

To'all whom it may concern:

-Be itknown that I, JAMES WILKINSON, acitizen of the United States, residing at Boston, county of Suffolk, State of Massachusettsv useful improvements in Emergency-Governors, of which the'following is'a specification.

to manufacture. I

For a consideration of what I believe .to

be novel and my invention, attention is di-' rested to the. accompanying description "and claims appended thereto.

In the drawing which illustrates one of the embodiments of my invention, Figure 1 is a view partially in elevation and partially in section of an emergency governor,

the section being taken on line 1-1 of Fig.

3; Fig. 2 is a sectional view taken on line 2-2 of Fig. 1;. and Fig. 3 is a sectional View taken-on hne 3-3 of Fig. 1.

1 indicates a shaft driven by a turbine or other apparatus to be controlled. Surrounding it and secured thereto by a key 2 is a sleeve 3 having a flange 4 formedintegral therewith. 5 indicates a second flange .thatis also-keyed to the shaft and cooperates with the sleeve to form a recess, Fig. 2, to

receive the weight 6. The weight, 6, best on the other 'so shown in Fig. 1, comprises a ring-like structure that surrounds the sleeve and has a greater mass on one side of a verticalvplane passing through that as said weight is rotated' it has a tendency to move in a direc- I the axis of the shaft. This action is resisted or opp osed by a fiat spring 7 that is seated at its ends 111 notches 8 formed at the ends of a recess in the weight and which at its central portion rests on the sleeve 3. This spring at all times has a tendency to straighten out. it

is held against axial movement y the have invented certain new and.

The present invention relates to so-called' the axis of the shaft than 1 flanges of the sleeve. The ring directly back of the spring is cut away or recessed at 9 to'permit the weight to move, in Fi 1, from right to left upon a predetermine 7 in crease in speed. So long as the speed is normal the weight remains in the position shown. As it is necessary to, adjustthese we ghts to actuate at a predetermined speed, it is some times necessary to change the mass of said ring. To this end a nu" )er of holes 10. are bored in the ring and these are filled with plugs 11. -By removing one or more of these pins the unbalanced arrangementof the mass can readily be changed thereby efiecting a variation in the tripping speed of the governor.

12 indicates a. pin that is carried by the weight and moves'in slots 13 formed in the flange 4 and in the ring 5. This forms the driving connection between the shaft and weight and serves to prevent angular movement of the weight independently of the shaft. .7 p

Surrounding the weight is a ring 14 that; is supported bya pivot pin 15 carried by any suitable support. The ring is provided with an extension or projection 16 containing a shoulder 17 that engages with the latch 18, the latter being provided with a shoulder 19 that engages the-shoulder 17 when the governor is tripped, said shoulder 19 limiting the movement of the rod 20 which is connect-ed to one end of the latch and also serving as a means to limit the movement of the ring. The latch is provided with a pivot 21 supported in one or more brackets 22 from a suitable fired suport. p 23 indicates an arm that is formed inte gral with the latch to which one end of. the coiled extension spring 24: is connected, the other end of the spring being attached to the projection 16 of the ring. The rod 20 may be arranged to trip an emergency valve to shut off steam to the turbine or if the governor is used with some other apparatus than a turbine, it can be employed to trip a suitable regulating mechanism that w ll cut off the supply of energy to the apparatus driving the governor. p

The operation of my lrnproved governing mechanism is as follows z-Assummg that speed of the driven shaft 1 reaches a predetermined value, the heavy portion of the weight, 6 will move outward. away "from the.

shaft and when it is moved a suficient dis tance Wlll come in contact with the inner surface of the ring 14, thereby swinging it to the left about its pivot 15., When a certain displacement of the weight'has taken place, the shoulder 17 will be withdrawn from engagement with the latch 18 and the spring 24 will turn the latch about the pivot 21 and in so doing move the rod upwardly to trip the valve or other mecha nism actuated thereby, thus shutting down the machine. The shoulder 19 engaging the 1 shoulder 17 limits the movement of the ring desired. All nicely fitting parts are avoide ed so that no particular skill is required in the manufacture thereof and the governor as a whole is'readily assembled and taken down when desired;

In accordance with the provisions of the patent statutes, I have described the princi ple of operation of my invention, together with the apparatus-which I. now consider to represent the best embodiment thereof; but,

I desire to have'it understood that the apparatus shown is only illustrative and that the invention can be carried-outhy other means-.1 I

. What! claim as new and desire to secure by Letters Patent of the United States,'is

1. In an emergency governor, the conihi natlon' of a driving member, a ring shaped weight which surrounds the member and hasa greater mass on one side of a plane passing through the axis of the member than on the other, a spring which opposes the movement of the weight in a piane perpendicular to the axis of the member, said spring being located between the weight and said drivingmember, and a means arranged to be actuated by said Weight.

2. In an emergency governor, the conibi-' nation of a driving member, a ring shaped weight which surrounds the member and has a greater mass on one side of a plane passing through the'axis of the member than on the other, a flat spring whoseends are fitted into notches in" the weight and whose central portion rests on the member, and a means actuated by the periphery, of saidweight.

3. In an emergency governor, the combination of a dI'lVlng shatt, a flanged sleeve on the shaft, a ring-shaped weight that sur rounds the sleeve and is located between its flanges, said ringsha'ped weight having an ,-e5. ;unbalanced mass, a recess in the weight, terintense fifiiating in notches, a fiat spring whose ends are seated. in the notches and whos'h central portion rests on thesleeve for op posing the outward movement of the Weight-,1 and means actuated by... the peripheral porticn of the Weight,

4, In an emergency governor, the cornbination of a driving member, a ring-shaped, weight- Which surrounds the member and has a greater mass on one side of a plane passing through its axis than on the other, a spring opposing the movements of the Weight, a ring which surrounds the Weight. and is movedthereby, a latch controlled by the ring, and a, means that is released by the latch,

5'. lnan emergency governor, the combination of a driving .membe'r.,,a ring-shaped Weight which surrounds the member and has a greater mass on one side of a plane passing through its axis than on the other, a spring opposing the movements of the weight, a'ring which surrounds the weight andis'rocked thereby, a projection onthe ring havinga shoulder, a latch arranged to engage the shoulder, a means actuated bythe latch, and a spring that'tends to hold the shoulder and latch in fixed relation.

6. In an emergency governor, the combination oi? a driving member, a ring-shaped 9 weight which surrounds the'rnemberand I hasa greater mass on one side of a plane passing through its axis'thaii on the other, a spring opposing the movements of the Weight, a ring which surrounds theweight and is rocked thereby, a projectionfpn the ring having a shoulder that holds the, ring ina fixed position, a spring thatholds'the latch and ring in definite 'relation,' and a rod connected to the iatch which isrnoved 5 by the spring when the governor. displaces the ring and releases the latch. j

7, in an emergency governor, the combination of a driving member, a'weight moved thereby, a spring opposing the movement of the wei ht away from the member, a means acted upon by the weight, a pivoted latch is fixed in position by the means, a dc? vice that is moved by the latch when the latter is released by the means, and a spring which normally holds the latch and means in position. and which moves the device when the means releases the latch.

'8 in an emergency governor, the cfnnoi-v nation of a shaft a flanged sleeve mounted thereon, a ring-shaped weight that sin rounds the sieeve-and is located between its flanges, said Weight being heavier on one side iii an on the other, a spring that opposes the movements of the weight, and a pin carried by the weight whose ends project into slots in theflanges to prevent independent rotation. V L

in, an emergency governor, the combination e15 shaft, a flanged sleeve mounted 13c iis ,hereon, a ring-shaped weight that surof the weight and sleeve, and it means actu- 10 rounds the sleeve and is located between its ated by the wei ht. flanges, said weight bein heavier on one In witness w ereo'f, I'have hereuntoset side tgan on the otherii a at lslprirfig that dis my hand this 5th day of February 1912.

5 ocate in a recess in t e Wei t w ose en 5 1 rest in notches in the weigiit, said spring JAMES WILKINSON being prevented from movin axially of the Witnesses: shaft by the flanges on'the seeve, a pin for BENJAMIN B. Hum, preventing independent angular movements HELEN 0RFORD.- 

